Liquid treating apparatus

Abstract

An apparatus for the continuous treatment of liquids such as rainwater, sewage and drainage, comprised of a rotary separator having a centrally located freely rotating cylinder which creates positively and forcibly a circular flow of liquid within the rotary separator different from the circular flow of the liquid caused by its being charged within the separator. Solid and suspended materials in the liquid are drawn to the center of the separator for removal and containment within a reservoir respectively. The reservoir, for collection of suspended material, is formed as part of the rotating cylinder. The apparatus further may comprise a holder-separator for entrapping floating substances.

What is claimed is: 
     
       1. A liquid treating apparatus for settling and separating solid matters by circulating a liquid in a separator where the liquid subject to treatment is freely charged and discharged, said apparatus comprising a rotary separator having a liquid inlet, an outlet for treated liquid and a rotating cylinder having a base, and an upper end adapted to be adjacent a surface of the liquid during said treatment, with said rotating cylinder provided with a reservoir for collecting suspended matters, said reservoir being situated on said rotating cylinder adjacent the upper end of the cylinder, with said reservoir being below the surface of the liquid during said treatment, said rotating cylinder being freely revolved and being disposed in the central portion of said separator, wherein when said liquid is charged through said liquid inlet into circulation within said separator, the flow path of said circulating liquid in said separator is substantially around said rotating cylinder with a first circular flow around said rotating cylinder, said rotating cylinder generating a secondary strong eddy flow in the central portion of said separator by the revolution of the cylinder itself to create a reduced pressure, said secondary flow being directed toward said rotating cylinder, thereby settling and separating said solid matters and allowing suspended matters and others except for said liquid in separator to have a centripetal force, whereby said solid matters and suspended matters are drawn toward the center of the separator, with said settled solid matters being collected adjacent the base of the cylinder, said suspended matters being collected in the reservoir, and said treated liquid is discharged through said liquid outlet.